The application of metal caps has been continuously increased as real life are extended. Metal caps is usually made of aluminum and polyethylene(PE) as packing. Since metal caps contain 75% aluminum on a weight basis, metal caps may be a valuable source when these were properly recovered.
The recovery methods of metal caps have mechanical peeling and incineration. However these are either hard to apply in some case or environmentally unacceptable.
So in this investigation, recovery method of aluminum from metal caps was investigated using pyrolysis. The result shows that pyrolysis temperature and pyrolysis time was 450℃ and 120min. respectively. Also 100% of aluminum was recovered from metal caps. Heat content of recovered oil was high enough to use as a fuel representing 7,425.0, 7,793.1, 7,583.2, 7,726.2(cal/g). Heavy metal contens in the oil were under regulatory limit indicating.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. 실험시료
  2.2. 열분해 장치
  2.3. 열분해 실험
  2.4. 실험 분석
 3. 결과 및 고찰
  3.1. 열분해온도에 의한 영향
  3.2. 열분해시간에 의한 영향
  3.3. 시료 양에 따른 열분해 효율
  3.4. 재생오일의 발열량 및 중금속 함유량
 4. 결 론
 참 고 문 헌

• 서무룡(경상대학교 기초과학 연구소) | Moo-Lyong Seo (Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University) Corresponding Author
• 진달샘(경상대학교 자연과학대학 화학과) | Dalsaem Jin (Department of Chemistry Gyeongsang National University)
• 황재영(경상대학교 자연과학대학 화학과) | Jaeyoung Hwang (Department of Chemistry Gyeongsang National University)